Configuration

SimCLR histology encoder + random forest (HEST; Ciga et al.)

Published histology patch encoder whose frozen features the HEST authors scored with a Random Forest regression head.

Identified as SimCLR histology encoder of Ciga et al.. The source table prints Ciga.

Configuration: Frozen patch embeddings scored by HEST with its 70-tree random-forest regression head.

HEST §5.2 lists 'Ciga Ciga et al. [2022] (SimCLR pretrained on public histology data)' among its ten patch encoders, and Table 1 scores their embeddings with a 70-tree random forest. The cited paper applies SimCLR to 57 unlabelled histopathology datasets. The printed label 'Ciga' is the first author's surname, so the display name describes the method and keeps the attribution.

Regression head: Random forest with 70 trees (sklearn) mapping patch embeddings to log1p-normalised expression of the top 50 highly variable genes, scored by Pearson correlation.
Pretraining: SimCLR self-supervised pretraining on public histology data.

Not established: Backbone. HEST App. C.3 (p.17) and Table A12 (p.26) say ResNet-50. The original repository example loads ResNet-18 and the lab repository offers ResNet-34, 50 and 101. Which released weights HEST used is not stated. Training recipe. HEST Table A12 labels the recipe 'Supervised', which contradicts HEST §5.2, App. C.3 and the original paper. Checkpoint. No checkpoint file or revision is identified.

HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis; Self supervised contrastive learning for digital histopathology (arXiv:2011.13971v2); Self-supervised histopathology repository README (ozanciga/self-supervised-histopathology); Self-supervised histopathology repository README (martellab-sri/self-supervised-histopathology) · HEST arXiv:2406.16192v1 §5.2, p.6; Table 1, p.7; App. C.3, pp.14 and 17; Table A12, p.26. Ciga et al. arXiv:2011.13971v2 abstract, p.1. github.com/ozanciga/self-supervised-histopathology README at f7a93798911c861efa297fd9c9b9b1f9ece0c1c0; github.com/martellab-sri/self-supervised-histopathology README at 22d3440f8d94d6e367304f1e50b82e9ea930dbd7.. AI-assisted source review on 2026-09-24; no human scientific review.

10 evaluations · 10 results

Overview

Published histology patch encoder whose frozen features the HEST authors scored with a Random Forest regression head.

Consult the linked sources for architecture or protocol details. Missing evidence is not evidence of a missing capability.

Evaluations and results

10 evaluations · 10 results. Different protocols are not a single leaderboard.

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Exact evaluated configurations and original reported results
Tested configuration	Protocol and dataset	Finding	Evidence and details
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark CCRCC: Gene expression prediction from histology, Clear cell renal cell carcinoma Dataset subset: HEST-Benchmark CCRCC (HEST-Benchmark split)	0.127 ±0.04 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.04 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark CCRCC: Gene expression prediction from histology, Clear cell renal cell carcinoma Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(CCRCC), column(Ciga)
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark COAD: Gene expression prediction from histology, Colon adenocarcinoma Dataset subset: HEST-Benchmark COAD (HEST-Benchmark split)	0.102 ±0.04 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.04 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark COAD: Gene expression prediction from histology, Colon adenocarcinoma Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(COAD), column(Ciga)
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark HCC: Gene expression prediction from histology, Hepatocellular carcinoma Dataset subset: HEST-Benchmark HCC (HEST-Benchmark split)	0.045 ±0.00 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.00 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark HCC: Gene expression prediction from histology, Hepatocellular carcinoma Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(HCC), column(Ciga)
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark IDC: Gene expression prediction from histology, Invasive ductal carcinoma Dataset subset: HEST-Benchmark IDC (HEST-Benchmark split)	0.406 ±0.02 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.02 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark IDC: Gene expression prediction from histology, Invasive ductal carcinoma Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(IDC), column(Ciga)
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark LUNG: Gene expression prediction from histology, Lung Dataset subset: HEST-Benchmark LUNG (HEST-Benchmark split)	0.515 ±0.02 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.02 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark LUNG: Gene expression prediction from histology, Lung Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(LUNG), column(Ciga)
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark LYMPH_IDC: Gene expression prediction from histology, Lymph node metastasis of invasive ductal carcinoma Dataset subset: HEST-Benchmark LYMPH_IDC (HEST-Benchmark split)	0.218 ±0.07 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.07 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark LYMPH_IDC: Gene expression prediction from histology, Lymph node metastasis of invasive ductal carcinoma Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(LYMPH_IDC), column(Ciga)
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark PAAD: Gene expression prediction from histology, Pancreatic adenocarcinoma Dataset subset: HEST-Benchmark PAAD (HEST-Benchmark split)	0.397 ±0.07 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.07 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark PAAD: Gene expression prediction from histology, Pancreatic adenocarcinoma Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(PAAD), column(Ciga)
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark PRAD: Gene expression prediction from histology, Prostate adenocarcinoma Dataset subset: HEST-Benchmark PRAD (HEST-Benchmark split)	0.332 ±0.00 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.00 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark PRAD: Gene expression prediction from histology, Prostate adenocarcinoma Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(PRAD), column(Ciga)
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark READ: Gene expression prediction from histology, Rectum adenocarcinoma Dataset subset: HEST-Benchmark READ (HEST-Benchmark split)	0.046 ±0.09 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.09 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark READ: Gene expression prediction from histology, Rectum adenocarcinoma Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(READ), column(Ciga)
Configuration: SimCLR histology encoder + random forest (HEST; Ciga et al.)	Task: HEST-Benchmark SKCM: Gene expression prediction from histology, Skin cutaneous melanoma Dataset subset: HEST-Benchmark SKCM (HEST-Benchmark split)	0.484 ±0.01 pearson_r correlation · higher Uncertainty: type: standard_deviation; value: 0.01 Coverage: Not reported scored / Not reported eligible	Author-reported evaluation · Source checked Methods, coverage and source SimCLR histology encoder + random forest (HEST; Ciga et al.) on HEST-Benchmark SKCM: Gene expression prediction from histology, Skin cutaneous melanoma Random Forest regression with 70 trees over frozen patch features, averaged over folds or patients. Aggregation: Not reported HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Table 1, row(SKCM), column(Ciga)

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Release 2026-09-29-06401fd5b220 · Record review: source checked

4 source records and release history

HEST-1k: A Dataset for Spatial Transcriptomics and Histology Image Analysis · Original source · Version pinned by URL and artifact SHA256 when available
Self supervised contrastive learning for digital histopathology (arXiv:2011.13971v2) · Original source · 2011.13971v2
Self-supervised histopathology repository README (ozanciga/self-supervised-histopathology) · Original source · f7a93798911c861efa297fd9c9b9b1f9ece0c1c0
Self-supervised histopathology repository README (martellab-sri/self-supervised-histopathology) · Original source · 22d3440f8d94d6e367304f1e50b82e9ea930dbd7

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Technical metadata and extraction receipts

Stable ID: hest-method-ciga

areas: cells-tissues
source locator: Table 1, column(Ciga)
missing metadata: checkpoint revision: unreported; parameters: unextracted
source label: Ciga
source identity: status: resolved; label form: author_surname; display name: SimCLR histology encoder + random forest (HEST; Ciga et al.); identity: SimCLR histology encoder of Ciga et al.; configuration: Frozen patch embeddings scored by HEST with its 70-tree random-forest regression head.; basis: HEST §5.2 lists 'Ciga Ciga et al. [2022] (SimCLR pretrained on public histology data)' among its ten patch encoders, and Table 1 scores their embeddings with a 70-tree random forest. The cited paper applies SimCLR to 57 unlabelled histopathology datasets. The printed label 'Ciga' is the first author's surname, so the display name describes the method and keeps the attribution.; source ids: evidence-expansion-p2-hest-cached-636099a73dee; source-label-ciga-arxiv-3b08dd7e; source-label-ciga-readme-f7a93798; source-label-martellab-readme-22d3440f; source locator: HEST arXiv:2406.16192v1 §5.2, p.6; Table 1, p.7; App. C.3, pp.14 and 17; Table A12, p.26. Ciga et al. arXiv:2011.13971v2 abstract, p.1. github.com/ozanciga/self-supervised-histopathology README at f7a93798911c861efa297fd9c9b9b1f9ece0c1c0; github.com/martellab-sri/self-supervised-histopathology README at 22d3440f8d94d6e367304f1e50b82e9ea930dbd7.; known details: label: Regression head; value: Random forest with 70 trees (sklearn) mapping patch embeddings to log1p-normalised expression of the top 50 highly variable genes, scored by Pearson correlation.; source ids: evidence-expansion-p2-hest-cached-636099a73dee; source locator: HEST §5.2, p.6; App. C.3, p.14; label: Pretraining; value: SimCLR self-supervised pretraining on public histology data.; source ids: evidence-expansion-p2-hest-cached-636099a73dee; source-label-ciga-arxiv-3b08dd7e; source locator: HEST §5.2, p.6; Ciga et al. abstract, p.1; unknown: label: Backbone; note: HEST App. C.3 (p.17) and Table A12 (p.26) say ResNet-50. The original repository example loads ResNet-18 and the lab repository offers ResNet-34, 50 and 101. Which released weights HEST used is not stated.; label: Training recipe; note: HEST Table A12 labels the recipe 'Supervised', which contradicts HEST §5.2, App. C.3 and the original paper.; label: Checkpoint; note: No checkpoint file or revision is identified.; original name: Ciga; original description: Published histology patch encoder whose frozen features the HEST authors scored with a Random Forest regression head.; review: method: automated_source_review; date: 2026-09-24; note: AI-assisted review against the cited primary sources. No human scientific review. Values, locators and comparison conditions are unchanged.

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